- Title
- The synthesis and electrochemical behaviour of water soluble manganese phthalocyanines: Anion radical versus Mn(I) species
- Creator
- Sehlotho, Nthapo, Durmuş, Mahmut, Ahsen, N, Nyokong, Tebello
- Date
- 2008
- Type
- Article
- Identifier
- vital:6596
- Identifier
- http://hdl.handle.net/10962/d1004345
- Description
- The following MnPc derivatives were synthesized: 1,(4)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (5a), quaternized 1,(4)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (5b), 2,(3)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (6a) and quaternized 2,(3)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH)(6b). Spectro-electrochemistry shows that the reduction of Mn(II)Pc to Mn(I)Pc occurs only when the complexes are in their quaternized form (5b and 6b). The reduction (to Mn(I)Pc(−2)) of the quaternized form occurs at a lower potential than that (to Mn(II)Pc(−3)) of the unquaternized form. This observation suggests that metal reduction (to Mn(I)Pc(−2)) versus ligand reduction (to Mn(II)Pc(−3)) in Mn(II)Pc complexes depends on the nature of the ring substituents.
- Format
- 10 pages, pdf
- Language
- English
- Relation
- Sehlotho, N. and Durmuş, M. and Ahsen, N. and Nyokong, T. (2008) The synthesis and electrochemical behaviour of water soluble manganese phthalocyanines: Anion radical versus Mn(I) species. Inorganic Chemistry Communications, 11 (5). pp. 479-483. Available: http://dx.doi.org/10.1016/j.inoche.2008.01.029
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Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
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